Since faction base have 4 wings, there will be summoned 4 not very hard bosses in them. And after killing them - though one in the middle of base.
I think it was around 200mil for us to get our guild base. Aga should see about getting faction base wars going, they were suppose to be brought to the official server but never made it =/
Could I suggest the announcement be made in red text? Unfortunately my faction missed out because of world chat spam, and missing the text/having world chat off to avoid the spam.
More than a few times iirc, I think there were at least 15-30 red-chat announcements made.